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Yufan Wu¹, Shuo Zhao², Ye Xu³

¹Department of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, P. R. China.

ACS applied nano materials

|May 2, 2024

概括

一种新型的六核加多纳米集群 (Gd6) 纳米探针针对瘤亡,增强MRI对比度. 这种新的对比剂 (CA) 为癌症诊断和治疗监测提供了改进的成像.

科学领域:

生物医学成像技术生物医学成像技术
纳米技术纳米技术
放射化学放射化学是指辐射化学.

背景情况:

磁共振成像 (MRI) 依赖于对比剂 (CA) 进行瘤评估.
目前的加多 ((III) CAs是单核的,需要高剂量并有不良事件的风险.
需要先进的CA,提高有效性和安全性.

研究的目的:

为了开发一种新的,多核的,灭细胞向的MRI对比剂.
为了增强瘤可视化,并使亡检测 in vivo.
为了克服目前基于加多的对比剂的局限性.

主要方法:

一个六核加多纳米集群 (Gd6) 与一个亡向部分 (ZnDPA) 结合的合成.
使用磁共振成像 (MRI) 描述纳米探针的放松性和r1/r2比.
在4T1瘤携带小鼠中瘤亡成像的体内评估.

主要成果:

在Gd6-ZnDPA纳米探针展现高的纵向放松性 (44.67mM-1s-1),低的r1/r2比率 (0.68).
纳米探针显示出优异的瘤亡成像,并增强了MR信号比率 (~74%).
在长达48小时的窗口内,可以实现有效的MRI成像.

结论:

六核Gd6-ZnDPA纳米探针代表了MRI对比剂的一个有希望的进步.
这种亡向剂为瘤成像和诊断提供了卓越的性能.
这项研究为改善癌症治疗的非侵入性监测铺平了道路.

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